This is a custom set up w/ JL AUDIO 13W7. My new daughter rides with me so I cant use it. My aftermarket trunk lid just cant take it either so it must go. This unit is in great condition. I donít know how to describe this thing in words but I sum it up with "THIS THING IS INSANE !" I have delt with a lot of sub system combinations in my time but I never seen or felt anyone perform as such. This is a custom professionally made enclosure for one of the best subs on the market. I had this box made to fit perfectly in the e46 bmw and properly tuned with this subwoofer. You are dealing with the best. Iím not a dealer so I cant afford to give you a warranty so all sales are final. You have nothing to worry about though cause its in great condition. Iím asking $900 plus shipping. If you have any question feel free to email or call 757-581-9018.